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http://dx.doi.org/10.5333/KGFS.2021.41.3.155

Effects of Cutting Length on Fermentation Characteristics and Aerobic Stability of Whole Crop Rice Silage  

Lee, Seong Shin (Institute of Agriculture & Life Science, Gyeongsang National University)
Joo, Young Ho (Institute of Agriculture & Life Science, Gyeongsang National University)
Choi, Jeong Seok (Division of Applied Life Science (BK21Plus), Gyeongsang National University)
Jeong, Seung Min (Division of Applied Life Science (BK21Plus), Gyeongsang National University)
Paradhipta, Dimas Hand Vidya (Faculty of Animal Science, Universitas Gadjah Mada)
Noh, Hyeon Tak (Division of Applied Life Science (BK21Plus), Gyeongsang National University)
Kim, Sam Churl (Institute of Agriculture & Life Science, Gyeongsang National University)
Publication Information
Journal of The Korean Society of Grassland and Forage Science / v.41, no.3, 2021 , pp. 155-161 More about this Journal
Abstract
This study was conducted to estimate the effect of different cutting lengths on fermentation characteristics and aerobic stability of whole crop rice (WCR) silage. The WCR was harvested at the yellow ripe stage (43.7%, DM), and then cut at 5 (R05), 10 (R10), and 20 cm (R20) of the theoretical length of cut with no cut WCR (R60). Each forage was ensiled into 20 L mini bucket silo (5 kg) for 150 days in quadruplicates. The cutting lengths were not affected the chemical compositions of WCR silage (p > 0.05). The pH (p < 0.001) and concentration of ammonia-N (p = 0.022) in WCR silage were increased linearly with the increase of cutting length. The concentration of lactate had quadratic effect (p = 0.007), which was highest in R20 silage (p < 0.05). The concentration of acetate was increased linearly (p = 0.014), but the concentration of butyrate was decreased linearly (p = 0.033). The lactic acid bacteria count was decreased linearly (p = 0.017), and yeast count had quadratic effect (p = 0.009), which was the highest in R20 silage (p < 0.05). Aerobic stability had strong quadratic effect (p < 0.001), which was the highest in R20 silage (p < 0.05). In conclusion, R60 silage had highest pH by a linear increase of ammonia-N concentration and led to low aerobic stability. While R20 silage had the lowest pH by high lactate concentration and led to high aerobic stability.
Keywords
Aerobic stability; Cutting length; Fermentation quality; Whole crop rice silage;
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Times Cited By KSCI : 4  (Citation Analysis)
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